Patents by Inventor Dale Harlan

Dale Harlan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5787988
    Abstract: A folding planter includes a frame formed by first and second frame members supported for relative, longitudinal shifting movement, a primary fluid-actuated piston and cylinder assembly for shifting the first and second frame members between retracted and extended positions, and a pair of planter assemblies each supported on the second frame member for pivotal movement about a vertical pivot axis between an extended planting position and a retracted transport position. Each planter assembly includes a tool bar that extends transverse to the longitudinal axis of the frame in the planting position and parallel to the frame in the transport position, and a plurality of planting units supported on the tool bar. A pair of elongated trusses are connected between the first frame member and the planter assemblies.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: August 4, 1998
    Assignee: Landoll Corporation
    Inventors: Robert Dale Harlan, Donald R. Landoll
  • Patent number: 4525988
    Abstract: A planter attachment is installed on an agricultural combine between the throat portion and cutter head thereof. The planter attachment includes a transversely extended forward tool bar carried on a mounting frame adapted for connection to the cutter head attachment structure on a combine throat. An auxiliary cutter head attachment frame is also connected to the tool bar and positioned forwardly of the mounting frame for receiving and supporting a cutter head thereon. Individual planter units are mounted on at least one rearward tool bar which is supported relative to the forward tool bar by a parallelogram linkage to maintain the horizontal disposition of the planter units in response to pivotal movements of the combine throat. A pivotal robot structure on the mounting frame senses the ground position for adjusting the combine throat to maintain a uniform planting depth. The pivotal support for the auxiliary cutter head attachment frame enables independent adjustment of the cutting height.
    Type: Grant
    Filed: August 18, 1983
    Date of Patent: July 2, 1985
    Inventor: Dale Harlan